Helium detection via field ionization from carbon nanotubes

被引：59

作者：

Riley, DJ

Mann, M

MacLaren, DA

Dastoor, PC

Allison, W

Teo, KBK

Amaratunga, GAJ

Milne, W

机构：

[1] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England

[2] Univ Cambridge, Dept Engn, Cambridge CB2 1PZ, England

来源：

NANO LETTERS | 2003年 / 3卷 / 10期

基金：

英国工程与自然科学研究理事会;

关键词：

D O I：

10.1021/nl034460c

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A novel, high-efficiency detector for neutral atoms such as helium is described. The design uses multiwalled carbon nanotubes (MWNTs), grown by chemical vapor deposition on a steel support wire. Application of a positive bias to the MWNTs generates electric fields sufficient to field-ionize passing gas-phase atoms. Under ultrahigh vacuum conditions, the detector was demonstrated to be capable of ionising and detecting even helium gas, the element with the highest ionization potential.

引用

收藏

页码：1455 / 1458

页数：4

相关论文

共 22 条

[1]

[Anonymous], 1961, FIELD EMISSION FIELD

[2] Degradation and failure of carbon nanotube field emitters [J].

Bonard, JM ;

Klinke, C ;

Dean, KA ;

Coll, BF .

PHYSICAL REVIEW B, 2003, 67 (11) :10

[3] Carbon nanotube films as electron field emitters [J].

Bonard, JM ;

Croci, M ;

Klinke, C ;

Kurt, R ;

Noury, O ;

Weiss, N .

CARBON, 2002, 40 (10) :1715-1728

[4] Field emission from carbon nanotubes:: perspectives for applications and clues to the emission mechanism [J].

Bonard, JM ;

Salvetat, JP ;

Stöckli, T ;

Forró, L ;

Châtelain, A .

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 1999, 69 (03) :245-254

[5] Field emission of individual carbon nanotubes in the scanning electron microscope [J].

Bonard, JM ;

Dean, KA ;

Coll, BF ;

Klinke, C .

PHYSICAL REVIEW LETTERS, 2002, 89 (19) :1-197602

[6] Micrometer-sized nozzles and skimmers for the production of supersonic He atom beams [J].

Braun, J ;

Day, PK ;

Toennies, JP ;

Witte, G ;

Neher, E .

REVIEW OF SCIENTIFIC INSTRUMENTS, 1997, 68 (08) :3001-3009

[7] High brightness electron beam from a multi-walled carbon nanotube [J].

de Jonge, N ;

Lamy, Y ;

Schoots, K ;

Oosterkamp, TH .

NATURE, 2002, 420 (6914) :393-395

[8] The environmental stability of field emission from single-walled carbon nanotubes [J].

Dean, KA ;

Chalamala, BR .

APPLIED PHYSICS LETTERS, 1999, 75 (19) :3017-3019

[9] A CARBON NANOTUBE FIELD-EMISSION ELECTRON SOURCE [J].

DEHEER, WA ;

CHATELAIN, A ;

UGARTE, D .

SCIENCE, 1995, 270 (5239) :1179-1180

[10] Towards realization of an atomic de Broglie microscope:: Helium atom focusing using fresnel zone plates [J].

Doak, RB ;

Grisenti, RE ;

Rehbein, S ;

Schmahl, G ;

Toennies, JP ;

Wöll, C .

PHYSICAL REVIEW LETTERS, 1999, 83 (21) :4229-4232